/ Dictionary / Index H hygro-: Meaning and Definition of Find definitions for: hygro- Pronunciation: [key] a combining form meaning “wet,” “moist,” “moisture,” used in the formation of compound words: hygrometer. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. hygric hygrogram Related Content Daily Word Quiz: crockery Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language